django_zendesk provides single-sign on functionality between a django.contrib.auth based site and Zendesk. Other authentication systems are compatible as long as they implement the @login_required decorator.
django_zendesk needs two settings.py variables to be implemented:
ZENDESK_URL = The URL of your support page, will either be on zendesk.com or your own domain (via a CNAME record) ZENDESK_TOKEN = The authentication token token you receive from Zendesk when setting up remote authentication
The only other code setup required is pointing a URL at the django_zendesk.views.authorize method, it will look something like:
Zendesk itself needs a bit of setup, including the URL we just set up above and a log-out URL which already should be implemented somewhere in your site.
Zendesk's documentation for remote authentication is here: http://www.zendesk.com/api/remote_authentication
If you're running the tests, make sure to set the TEST_DATABASE_CHARSET setting so that test databases are created to be utf8 compatible.
See initial idea/blog post here: http://www.jongales.com/blog/2009/05/12/zendesk-remote-authentication-with-django/